Question:
Identify the correct statements regarding enzymes
Identify the correct statements regarding enzymes
Updated On: Jul 28, 2022
- Enzymes are specific biological catalysts that can normally function at very high temperature $\left(T \sim 1000\,K\right)$
- Enzymes are specific biological catalysts that the posses well - defined active sites
- Enzymes are specific biological catalysts that can not be poisoned
- Enzymes are normally heterogeneous catalysts that are very specific in their action
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The Correct Option is B
Solution and Explanation
A) Enzymes function inside our body, therefore they function best at $310\,K$, the temperature of the human body. Therefore, they will not function at $T=1000\,K$.
B) Enzymes are highly specific. But they work in the same medium as target food particles. So they are homogenous catalysts.
C) Enzymes can be poisoned by the presence of certain substances which react with their active functional groups rendering them useless.
D) Enzymes are highly specific biological catalysts that possess well-defined active sites containing certain functional groups.
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Concepts Used:
Surface Chemistry
The study of the chemical phenomena that occur at the interface of two surfaces which can be solid-liquid, solid-gas, solid-vacuum, liquid-gas, etc.
Read Also: Surface Chemistry
Applications of surface chemistry are:
Adsorption:
The process of attraction and aggregation of the molecules of a substance on the surface of a solid is known as adsorption. For Example, N2 adsorbs on the surface of activated charcoal
Two types of adsorption are:-
- Chemisorption: It is also known as Chemical Adsorption.
- Physisorption: It is also known as Physical Adsorption.
Corrosion:
The process through which the refined metals convert themselves into more stable compounds is known as corrosion.
Crystallisation:
The type of technique used in order to purify the substances to separate Solids from liquids is known as crystallisation.
Heterogeneous Catalysis:
The process wherein a catalyst is used in order to increase the rate of a chemical reaction is known as catalysis. The catalyst does not undergo any transformation and can be recovered in a chemically unchanged state.
There are two types of catalysis:-
- When the catalyst involved and the reacting substances are same states of matter or in the same phase, it is known as Homogeneous Catalysis.
- When the catalyst involved and the reacting substances are in different states of matter or different phases, it is known as Heterogeneous Catalysis.